To enable multiple languages:
- Go to the Store Settings page of your dashboard
- Under "Store Languages", click on "Add/Remove additional lanugage"
- Select the additional languages you'd like your referral program to support
- Click the blue 'Enable' button to enable these languages
Please remember to go to the Themes page of your dashboard to configure the emails and pages templates for each language individually. They can be accessed by toggling the language option in the top right of the email / page editor.